It produced a wide range of plotters (both drum and flat-bed), digitizers, thermal transfer color printers,[3] thermal plotters[4] (InfoWorld June 13, 1994 p. 40) and other graphic input/output devices. In 1969, it produced about 80% of all plotters worldwide.

It also produced IBM plug compatible (PCM) disk and tape products. The disk products ranged from 2311 (CD-1) through 3350 equivalents. The tape product was a 3420 equivalent.

Houston Instruments was another manufacturer of pen plotters. They used the DMPL plotting control language. They competed with Hewlett Packard plotters such as the HP 7470.
They were purchased by Summagraphics.[5]